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Patented Nov. 7, 1-882.

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0. H. TYLER. OFFICE DESK.

N -267,041. Patented Nov. 7, 1882.-

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I UNITED STATES PATENT @rrrcn.

CHARLES H. TYLER, OF ST. LOUIS, MISSOURI.

OFFICE-DESK.

SPECIFICATION forming part of Letters Patent No. 267,041, dated November7, 1882.

Application filed February 20, 1882. (No model.)

To all whom it may concern Be it known that I, CHARLES H. TYLER, of thecity of St. Louis, in the State of Missouri, have invented a certain newand useful ln1- provement in OfficeDesks, of which the follow-' thedrawer-locking device, substantially as set forth; also, in otherdetails, set forth in the specification.

Figure 1 is a perspectiveview of myimproved desk with its two wingsattached. Fig. 2 is a front elevation of the same. Fig. 3 is ahorizontal section of the contiguous walls of the desk and wing, showingthe attaching devices. Fig. 4 is a vertical section of the contiguouswalls of the deskand wing, showing the attaching-hook. Fig. 5 is atransverse vertical section of the desk proper.

The body or central part of the desk consists of a base, A, and an uppermember or top, B. To the central part is removably attached a wing, 0,either at one or both sides.

I will first describe the body or central part, A B. The base or lowermember has side Walls, D, a rear wall, E, having hinged door or doors F,and a central wall, G, parallel with the rear wall. In front of thecentral wall there is a space for the legs of a person sitting at thedesk, with a side wall, D, at one side, and a frame, H, at the otherside, in which are a number of drawers, I. Above the drawers I is afixedtable or board,K. The drawers I are made to lock when the curved cover Lis drawn down upon the table, and the drawers are unlocked by throwingthecover upward and backward. The rear end of each drawer has a slot,'5, or in place of the slot a fixed loop or staple,

" which receives a spring-catch, M, to hold the shown on a singlevertical bar or rod,N, whose lower end terminates in a pin, it, whichworks in a socket in the floor 0 of the base A. Surrounding the pin is aspiral spring, P, which acts-to lift the rod into its elevated position.The upper end of the rod has lateral support on a radius-rod, Q, whichis hinged at one end to the upright D of the base and at the other endto the upright rod N. This rod is forced down to unlock the drawers by atoe, 1%, projecting downward and backward from the jointed corner of thesector-frame L of the cover L. The cover consists of two or moresections, L L whose faces are curved in the arc of a cylinder andsector-formed, each consisting of a metal frame, Z, the bars I of whichreceive and hold the panels The sectors are jointed to the desk at Z sothat they can be thrown up 'iuto the part B or be drawn down to coverthe table K, as shown in Fig. 5. Each lower section, as L fits insidethe section L above it, so that when raised into the part 13 they arenested together in a vertical series.

It will be understood that there is considera ble practical gain inmaking the cover in sections for several reasons, among which are thefollowing: The sections occupy a much smaller space when raised, as theydo not extend so far backward and downward as when the cover is made inone piece, for in the latter case the cover turns about one-fourth of 'acircle. To more fully explain, it will be understood that where thecylinder-cover is made in one piece it must extend as far backward whenopen as it does forward when closed down upon thetable. Thus a fixedtable can only extend an equal distance forward from the hinges that theback of the desk extends behind the hinges. As it is objectionable toextend the depth of the latter space, B, and the table is required to bemuch deeper than the part B to give the required accommodation for use,the table has been made to slide outward when the cover has been opened,and to he slid inward before the cover is closed to bring it within thescope of the cover. It will be seen that to bring the space E within theproper limit in depth, the height of such space is much limited, and thedepth of the tableis also limited, or it is made to slide inward andoutward.

It will be further seen that when the table is made to slide the lowerset of drawers must be dispensed with,to leave room for the table toslide back, and as the cover turns back and occupies the space behindthe rear edge of the table, it follows from the above, and from the factthat the height of the pigeon-hole space beneath the cover can not.exceed the depth of such space backward, and as the depth of the tablewhen the desk is closed cannot much exceed the depth of thepigeon-holes, and as any increase in depth of the part B isobjectionable, because it makes the desk cumbrous, that the pigeon-holespace between the level of the table and the top of the cover must becontracted, and that the depth of the table must be contracted, or elseit must be made to slide, whereas it will be readily seen that if thecover is made in sections, (two or more,) as described, the pigeon-holespace B can be increased in height, and the table K made a fixture andincreased in depth, because as the cover-sections fold within eachotherin a vertical series they may be made to occupy a space of verylittle depth from front to back.

I will now describe the construction of one of the wings O, and as theymay be made uniform a description of one will answer for both, (it beingof course understood that they are made right and left, to fit theopposite ends or sides of the central part, A B, of thedesk.) Theseextensions or wings do not rest upon the floor, but are so attached tothe ends of the desk as to terminate at their lower ends a shortdistance above the floor, by which means the,

desk can be moved from point to point in the room, running on suitablecasters (not shown) attached to the base of the desk. The wing O hasupright sides T T, a front, U, and back V. From the side wall T, nearits front edge, extend a number of. hooks, W, of any suitable form,which enter slots (1 in the side wall D and engage on the bottom edgesof said slots, or on pins therein. part of the wing is held firmlyagainst the central part or body, A B. The rear part of the of thisconstruction will be set forth hereinafter.

Z is a table, which is hinged to the wing O at 2', so that it can beturned down into the plane of the fixed table K, or be turned up into aperpendicular position to close the front of the pigeon-holes or otherrecesses in that part of By this means the front the wing. When thetable 'Z is turned down its outer edge is sustained by a bar, a, slidingbeneath the table K, and the inner edge of'the table Z rests on a heador ledge, c. From the lower inner edge of the table Z extends acounterbalance-weight, 2, that holds the door in its vertical positionwhen so placed, and which may assist in the support of the door, whendown, by pressure beneath the shelf To bring the edges of the tables Kand Z close together when the desk is first erected and the table Z isopened, the nut of screw X is turned outward on the screw, and then theelastic cushion Y forces the rear part of the wing O away from the rearpart of the body A B and brings the edges of the tables in closecontact.

0 is the cover of a scrap or waste receptacle. 0, and it is formed withtwo sector-shaped sides,c. The coveris hinged at thelower edge to thefront wall, U, of the wing. The mouthboard 0 is arranged to close theopening 0 of the waste-box when itis shut back in line with the frontwall, and in this position it is held by the weight of the sides 0within the waste-box. The scraps may be removed from the box (3 througha doorway at the back or side.

It will be seen that the construction of the desk is such that it can bequickly separated into a number of pieces that can be readily moved fromroom to room and quickly set up again. It will also be seen that a largeamount of room is aiforded for the reception of papers,

for the reasons before given.

I claim as new and of my invention 1., In a desk, a curved cover theends of which are each formed with a sector-shaped frame hinged at thecenter of its radius to the desk, and provided with a toe, R, formedupon the frame at its pivotal point, in combination with the bar Q,pivoted at its rear end to the side of the desk, the bar N,jointed atits upper end to thefront end of the bar Q and provided with the pin01., spring I", and catches M, and the drawers I, provided with slotsorstaples t', substantially as and for the purposes specified.

2'. The combination of base A, wing O, at-

taching device W d, and adjustable attachment X Y, substantially as setforth. 3. In a desk, the central member, A B, having the fixed table K,in combination with the extension 0, having hinged leaf Z and thethumb-screw X, and interposed elastic buffer Y, substantially as and forthe purposes set forth.

4. In a desk, the central member, A B, provided with a fixed table, K,in combination with an extension, 0, having a hinged leat', Z, arrangedto drop in line with the fixed table, substantially as and for thepurpose set forth.

CHARLES H. TYLER.

Witnesses SAML. KNlGHT, GEo. H. KNIGHT.

